私の活動の1つでは、ジオコーディングを実行できる必要があります（住所文字列検索で場所を検索します）。問題は、私の結果が広すぎることです。「マクドナルド」を検索すると、米国のさまざまな地域にある結果が表示されます。ユーザーが近くのレストラン（または任意の場所）を検索でき、結果が特定の距離内に表示されるようにするにはどうすればよいですか？基本的に、アプリケーションにはより正確な結果が必要です。これが起こっていることのスクリーンショットです：
public class MainActivity extends MapActivity {
HelloItemizedOverlay itemizedOverlay;
List<Overlay> mapOverlays;
Drawable drawable;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MapView myMap = (MapView) findViewById(R.id.mapview);
myMap.setBuiltInZoomControls(true);
MapController mc = myMap.getController();
mapOverlays = myMap.getOverlays();
drawable = this.getResources().getDrawable(R.drawable.androidmarker);
itemizedOverlay = new HelloItemizedOverlay(drawable, this);
//geopoints are cordinates in microdegrees or degrees * E6
GeoPoint point = new GeoPoint(34730300, -86586100);
//GeoPoint point2 = locatePlace("texas", mc); //HelloItemizedOverlay.locatePlace("Texas", mc, myMap);
//overlayitems are items that show the point of location to the user
OverlayItem overlayitem = new OverlayItem(point, "Hola, Mundo!", "im in huntsville");
//OverlayItem overlayitem2 = new OverlayItem(point2, "Texas", "hi");
//itemizedoverlay is used here to add a drawable to each of the points
itemizedOverlay.addOverlay(overlayitem);
//itemizedOverlay.addOverlay(overlayitem2);
//this adds the drawable to the map
//this method converts the search address to locations on the map and then finds however many you wish to see.
locatePlace("mcdonalds", mc, 5);
mapOverlays.add(itemizedOverlay);
//this animates to the point desired (i plan on having "point" = current location of the user)
mc.animateTo(point);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
@Override
protected boolean isRouteDisplayed(){
return false;
}
public void locatePlace(String locName, MapController mc, int numberToDisplay)
{ // code to make the google search via string work
// i use the Geocoder class is used to handle geocoding and reverse-geocoding. So make an instance of this class to work with the methods included
Geocoder geoCoder1 = new Geocoder(this, Locale.getDefault());
try {
List<Address> searchAddresses = geoCoder1.getFromLocationName(locName, numberToDisplay); // gets a max of 5 locations
if (searchAddresses.size() > 0)
{
//iterate through using an iterator loop (for loop would have been fine too)
//Iterator<Address> iterator1 = searchAddresses.iterator();
for (int i=0; i < searchAddresses.size(); i++){
//while (iterator1.hasNext()){
//step1 get a geopoint
GeoPoint tempGeoP = new GeoPoint( (int) (searchAddresses.get(i).getLatitude()*1E6), (int) (searchAddresses.get(i).getLongitude()*1E6) );
//step2 add the geopoint to the Overlay item
OverlayItem tempOverlayItm = new OverlayItem(tempGeoP, locName, "this is " + locName);
//step3 add the overlay item to the itemized overlay
HelloItemizedOverlay tempItemizedOverlay = new HelloItemizedOverlay(drawable, this); // its breakking here.........
tempItemizedOverlay.addOverlay(tempOverlayItm);
//the itemized overlay is added to the map Overlay
mapOverlays.add(tempItemizedOverlay);
}
}
} catch (IOException e)
{
e.printStackTrace();
// Log.e("the error", "something went wrong: "+ e);
}//finally {}
}
}
//これがItemizedオーバーレイクラスの重要なコードです
public HelloItemizedOverlay(Drawable defaultMarker, Context context)
{
super(boundCenter(defaultMarker));
myContext = context;
}
public void addOverlay(OverlayItem overlay){
mOverlays.add(overlay);
populate();
}
ありがとう、アダム
Vishwaのコメントに合わせた後のコードは次のとおりです。
// these 2 variables are my current location
latitudeCurrent = 34730300; // make this dynamic later
longitudeCurrent = -86586100; // make this dynamic later
LLlatitude = (latitudeCurrent - 100000)/(1E6); //lowerleft latitude = original lat - (1)*degree/10
LLlongitude = (longitudeCurrent+ 100000)/(1E6);//lowerleft longitude = original longitude - (1)*degree/10
URlatitude = (latitudeCurrent + 100000)/(1E6); //upperright latitude = original + (1)*degree/10
URlongitude = (longitudeCurrent+ 100000)/(1E6); //upperright longitude = original longitude + (1)*degree/10
try {
List<Address> searchAddresses = geoCoder1.getFromLocationName(locName, numberToDisplay, LLlatitude, LLlongitude, URlatitude, URlongitude);
